It has light green pinnate. Indigo leaves a product of Indigofera Tinctoria plant which give brilliant blue colour by fermentation of indigo leaves dye to fermentation indigo leaves produced a Indigotin liquid. It is responsible for blue colour today most dye is synthetic but natural dye from I. Tinctoria still available. Indigo is among the oldest dyes to be used for textile dyeing and printing. In old day india is a largest producer of indigo (neel).